fix: Complete snowbridge pezpallet rebrand and critical bug fixes

- snowbridge-pezpallet-* → pezsnowbridge-pezpallet-* (201 refs)
- pallet/ directories → pezpallet/ (4 locations)
- Fixed pezpallet.rs self-include recursion bug
- Fixed sc-chain-spec hardcoded crate name in derive macro
- Reverted .pezpallet_by_name() to .pallet_by_name() (subxt API)
- Added BizinikiwiConfig type alias for zombienet tests
- Deleted obsolete session state files

Verified: pezsnowbridge-pezpallet-*, pezpallet-staking,
pezpallet-staking-async, pezframe-benchmarking-cli all pass cargo check

bizinikiwi/pezframe/support/test/pezpallet/Cargo.toml

@@ -7,7 +7,7 @@ license = "Apache-2.0"
 publish = false
 homepage.workspace = true
 repository.workspace = true
-description = "Pezkuwi SDK FRAME support: support test pallet"
+description = "Pezkuwi SDK FRAME support: support test pezpallet"
 documentation = "https://docs.rs/pezframe-support-test-pezpallet"
 
 [lints]